Home / 20,629.56-30,921.30-18,968.88

Finding the Fourth Proportional to 20,629.56, 30,921.30 and 18,968.88

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Solution

The fourth proportional to 20,629.56, 30,921.30 and 18,968.88 is: 28,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.56 : 30,921.30 = 18,968.88 : x
  2. Step 2: Convert to fraction form
    20,629.56/30,921.30 = 18,968.88/x
  3. Step 3: Cross multiply
    20,629.56x = 30,921.30 × 18,968.88
  4. Step 4: Simplify right side
    20,629.56x = 586,542,429.14
  5. Step 5: Solve for x
    x = 586,542,429.14/20,629.56
  6. Step 6: Final answer
    x = 28,432.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.